2221012021000 has 64 divisors (see below), whose sum is σ = 5210738657280. Its totient is φ = 886085060800.

The previous prime is 2221012020979. The next prime is 2221012021043. The reversal of 2221012021000 is 1202101222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2516494 + ... + 3282493.

It is an arithmetic number, because the mean of its divisors is an integer number (81417791520).

Almost surely, 2^{2221012021000} is an apocalyptic number.

2221012021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221012021000 is an abundant number, since it is smaller than the sum of its proper divisors (2989726636280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221012021000 is a wasteful number, since it uses less digits than its factorization.

2221012021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799391 (or 5799377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2221012021000 its reverse (1202101222), we get a palindrome (2222214122222).

The spelling of 2221012021000 in words is "two trillion, two hundred twenty-one billion, twelve million, twenty-one thousand".